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Hybrid Vehicle Powertrain

a hybrid vehicle and powertrain technology, applied in the field of hybrid vehicle powertrains, can solve the problems of conventional electric traction motors being susceptible to damage, the approach may prove problematic, and the parts of the integrated transmission may not be suitable for all applications, so as to facilitate the coupling of a hybrid vehicle powertrain and reduce axial loading. the effect of reducing or inhibiting

Active Publication Date: 2015-11-19
JAGUAR LAND ROVER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a hybrid vehicle powertrain that includes a flexible coupling to connect an internal combustion engine and an electric traction motor to a common input of a transmission. The couplings are designed to reduce damage to the electric motor from axial loads and to manage balance between multiple input devices. The arrangement of the couplings helps to protect the electric motor and improves overall performance and efficiency of the hybrid vehicle.

Problems solved by technology

However, a particular integrated transmission may not be suitable for all applications, requiring the development of an alternate transmission.
This approach may prove problematic as conventional electric traction motors can be susceptible to damage when exposed to axial loading.

Method used

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Embodiment Construction

[0038]A hybrid powertrain 1 for a motor vehicle (not shown) in accordance with an embodiment of the present invention will now be described with reference to FIGS. 1, 2 and 3. The powertrain 1 comprises an internal combustion engine 3 (only shown schematically) and an electric machine 5. As shown in FIG. 1, the internal combustion engine 3 and the electric machine 5 are coupled to a transmission 7 having an integrated torque converter 9. The transmission 7 in the present embodiment is an automatic transmission, but it could equally be a manual transmission.

[0039]The electric machine 5 is a traction motor for providing a tractive force to propel the vehicle. The electric machine 5 comprises a first casing 10 disposed between the internal combustion engine 3 and the transmission 7. The internal combustion engine 3 comprises a second (engine) casing 11 and, in the present embodiment, the first casing 10 is mounted to the second casing 11. It will be appreciated that the first and secon...

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Abstract

The present invention relates to a hybrid vehicle powertrain (1). The powertrain (1) includes an internal combustion engine (3), an electric traction motor (5) and a transmission (7). A first flexible coupling (55) drivingly connects the internal combustion engine (3) to the transmission (7). A second flexible coupling (65) drivingly connects the electric traction motor (5) to the transmission (7). The present invention also relates to a dual coupling including first and second flexible couplings (55, 65). Furthermore, the present invention relates to a vehicle incorporating a powertrain (1).

Description

TECHNICAL FIELD The present invention relates to a hybrid vehicle powertrain. Aspects of the invention relate to a powertrain, to a coupling and to a motor vehicle.BACKGROUND OF THE INVENTION[0001]It is known to provide a hybrid vehicle with an internal combustion engine for operation in conjunction with an electric traction motor. The internal combustion engine and the electric traction motor can operate independently of each other or together to increase the maximum torque output. One approach is to develop an integrated transmission in which the electric traction motor is incorporated into the transmission. However, a particular integrated transmission may not be suitable for all applications, requiring the development of an alternate transmission. It would be desirable, at least from a commercial perspective, to retain the option of using a conventional transmission (i.e. one which does not incorporate an integrated electric traction motor) in combination with a hybrid powerpack...

Claims

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Application Information

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IPC IPC(8): B60K6/40B60K6/387B60K6/48F16D3/06
CPCB60K6/40F16D3/06B60K2006/4825B60K6/48Y10S903/904B60K6/387B60K6/405B60Y2400/4242B60Y2400/426B60Y2400/607B60Y2400/48Y02T10/62B60K6/38B60K6/485
Inventor WARDLE, DAVID
Owner JAGUAR LAND ROVER LTD